Device for sounding motor-car horns.



H.- BEAUGUUBT. DEVICE FOR SOUNDING MOTOR GAR HORNS.

APPLICATION FILED JULY 1a, 1908.

973,845. v Patented 0ct.25,1910

I which the motor shaft is provided does not by any suitable means, forexample by trac- 'tudinal direction.

'- invention, has the object of not only permitblast (that is to saywith the motor slowed its arrival at the horn is caused to pass into airfurnished hasfa tendency to follow the HUGUES BEAU-COURT,

or LYON, FRANCE.

, DEVICE FOR SOUNDING MOTOR-CAR I-I )RNS.

Specification of Letters Patent. Patented Oct. 25', 1910.

Application filed July 18. 1908. 7 Serial No. 444,236.

To all whom it may concern:

Be it known that I. Huouns BuAUcouR'r, a citizen of the French Republic,residing at Lyon, France, have invented a certain new and useful Devicefor Sounding Motor-Car Horns, of which the following is a specification.y

This invention relates to a device for sounding motor car horns andthe,object is to render such horns or warning instruments powerfullyresonant, whatever the pressure and volume of air discharged thereinto,this effect being produced by means of a special aerodynamic devicehereinafter described.

A rotary pump adapted to oscillate on the axle carrying it is placednear the fly-wheel of the motor so that the friction pulley with comeinto contact with said fly-wheel until the controlling button on thesteering wheel is depressed. This control may be effected tion exertedon a Bowden wire under which name is known a tractive wire incased 1n aflexible sheath non-compressible in a longi- By reason of the variationof speed of the motor the fly-wheel revolves at'speeds which may varyfrom 200 to 1600 revolutions per pressure of the air furnished at thesedifferent speeds are essentially variable. Therefore, a horn designedtobe sounded by a weak current and pressure would be blocked designedfor very powerful pressure and supply would be silent when the blast andpressure were weak. The aerodynamic device which forms one of theobjects of this ting the operation of the horn with ,a weak down) butalso with very powerful blast (that is to say with the motor running athigh speed).

According to this invention the air before a reservoir the interiorconstruction of which will be hereinafter described. This relay may havevarious shapes, but is preferably spherical. From the upper part thereofdescends a central tube terminating at approximately a, sixth of thedistance between the entrance and outlet of the air. Accord- ,ing totheknown aerodynamic principle the walls of the reservoir if the saidwalls, diverging from the air-inlet, make Wltlltllfi original directionof the air an angle of less than 180 degrees. By this action acountercurrent is produced at the central layer, which gives rise, nearthe lower orifice of-the central tube, to eddies the direction ofrotation of which is, opposed to the initial current. There is thusproduced, at this part,

.a depression which sufliciently weakens and attenuates the violence ofthe blast to prevent the blocking of the horn reed, though Ian-view ofsaid um) and Fi 4: is an elevation on a reduced scale, of the deviceforming the object of this invention applied to an automobile vehicle.

The pump A, which may be of any desired construction, is capable ofrocking about a shaft A carried by a bracket A attached to the frame ofthe vehicle. in such manner thatthe friction-wheel A fitted to the endof the pump-shaft is normally held at a distance of a few millimetersfrom the fly-wheel'B of the motor by means of a spring (Land can bedriven by said fiy wheel when the pump is brought into operativeposition in contact therewith, for example by traction exerted on theinternal wire of the Bowden device D, by means of a button placed on thesteering wheel.

When the friction-wheel A is brought into contact with the fly-wheel Bthe pump A isoperated and the compressed air which it produces passesout through a conduit E and-is led by an ordinary flex ble tube F to theaerodynamic device G. This apparatus comprises a reservoir G. into whichthe compressed air enters from pipe F. In the annexed drawing thisreservoir is of spherical shape and is provided with two unions H I. oneof which (H) is connected to the flexible tube F supplying thecompressed air from the pump, and the other (I) is connected to a tube Jto which is fixed the horn or other warning instrument K.

The reservoir G contains a tube L the shape of which is immaterial, theend Li of the tube L is fixed to the Union I, and the end L open andlocated at a certain distance from the orifice of the union H. Thecompressed air supplied by the tube F enters the reservoir G in themanner indicated by the. arrows, and then, under the influence of thepressure, passes into the tube L and thence into the tube J whichdirects it to the reed M of the horn or warning instrument K. that Iclaim as my invention and desire to secure by Letters Patent ot' theUnited States is 1. The combination with an audible warning instrumentand means for providing compressed air of an intermediate reservoircomprising an air chamber having its en trance in communication withsaid air providing means, said air-chamber having a tubular membertherein, with one end de-' livering into said audible warning instrumentexteriorly of said air-chamber, the op posite end of said tubular memberterminating near the entrance of said air-chamber substantially asdescribed.

2. The combination of an audible warning instrument a pump fordischarging compressed air, a reservoir intermediate the said instrumentand pump, having its inlet in communicatlon with said pump, and an airtube having its inlet end within the reservoir and in close proximity tothe inlet thereof, and its discharge end in communication with theaudible Warning instrument exteriorl of said reservoir substantially asdescribe 5 3. A device of the character described,1

comprising an audible Warning instrument, means for providing compressedair, and an a1r-chamber spherlcal in outline and having its entrance incommunication with said 40 compressed air providing means, saidairchamber having a tubular member therein, one end of said tubularmember delivering into said audible Warning instrument ex-.

teriorly of said air-chamber, the opposite end of said tubular memberterminating adjacent to the inletof said air-chamber.

In witness whereof I have signed this specification in-the presence oftwo wit-

